The so-called "Young Invincibles" get their name from the fact that many under-30s say they won't sign up for health insurance by the March 31 deadline because they're already healthy. That may be true, but if they're women, they might be leaving money on the table. For young women who qualify for subsidies, the free benefits of insurance offset the cost of paying for it, according to a new analysis from Nerdwallet, a consumer financial education site. The company calculated that for a 27-year-old who earns an income of $25,000, the cost of a silver insurance plan will be approximately $1,740 per year, and a bronze plan will cost approximately $1,116 per year.